BT134-800,127

Overview

The BT134-800,127 is a bidirectional triac manufactured by WeEn Semiconductors. It features an RMS on-state current of 4 A and a non-repetitive peak on-state current of 27 A. The device has a rated repetitive peak off-state voltage (VDRM) of 800 V and an on-state voltage of 1.4 V. Maximum holding current is 30 mA, with gate trigger voltage and current at 700 mV and 30 mA respectively. Leakage current is 100 uA at VDRM. It operates within a temperature range up to +125 C and uses a SOT-82-3 through-hole package.

Feature Summary

• Four-quadrant triggering capability for reliable operation across all gate polarities.
• Planar passivation technology ensures high voltage ruggedness and long-term reliability.
• High noise immunity suitable for demanding industrial environments.

Applications

• General purpose AC power switching
• Solid state relays
• Lighting control circuits

Procurement Notes

Verify the specific suffix '127' against official manufacturer documentation to confirm packaging details and compliance status. Ensure the component matches the required thermal and electrical specifications for the target application before finalizing procurement orders.

Selection Notes

Select this component when a 4 A RMS current rating and 800 V blocking voltage are required in a compact SOT-82-3 package. Compare gate trigger characteristics against driver capabilities to ensure proper turn-on performance under varying temperature conditions.

Part Context

This part belongs to the BT134 series of standard triacs from WeEn Semiconductors. It is designed for general-purpose AC switching applications requiring moderate current handling and robust blocking voltage in a small form factor.

Replacement Considerations

Check datasheets for equivalent parts offering identical 4 A/800 V ratings and SOT-82-3 pinouts. Verify compatibility of gate trigger parameters and thermal resistance values before substitution.